.model svg{
	max-width: 100%;
	max-height: 1000px;
}
.arrow{
	stroke-width: 2;
}
circle, ellipse, rect{
	stroke-width: 2;
}
circle.connector:hover{
	r: 30;
}
text{
	text-anchor:middle;
	alignment-baseline:middle;
	font-size:12;
}
.arrow:hover circle{
	r: 50;
}